Studying the DNA of 300 mice has flagged up genes which have been linked to hereditary (遗传的) sight loss for the first time. Researchers say because mice’s genes are so similar to humans’, their findings could lead to the treatment of more genetic diseases.
Scientists at the University of California, Davis studied information from a data bank of mice’s genetic material. They found 347 genes linked to eye problems, with just 86 of them having been studied in the past.
Only around 50 to 75 percent of hereditary eye diseases in human can be explained with present science. The researchers believe these hundreds of new genes found in mice could be a key to explaining-and therefore being able to treat the other 25-50 percent.
“This is extremely valuable for people with hereditary eye disease,” said researcher Professor Ala Moshiri. “All researchers are going to start using these data. In the past, we knew the problem was there but we didn’t know where to look. Now eye centers can call back patients and screen them for these new genes. We expected that more and more of these genetic diseases will be treatable.” Also, the fact is that more than 60 percent of eye problems at birth are ones resulting from the baby’s parents!
Thanks to data from the International Mouse Phenotyping Consortium (IMPC), which is trying to work out what every single gene in a mouse is responsible for, with the aim of translating it to humans, scientists are moving closer to figuring out all genetic causes of blindness. To do this, scientists separate a single gene from other ones at a time and then observe what effect it has on the mouse for a long time. This has so far been done more than 7,000 times and has achieved great success. Researchers are now working alongside eye care centers in Texas and Iowa in order to compare the mice’s genes to those of patients.
1.How many hereditary-sight-loss-related genes were newly found?
A.86. B.261.
C.300. D.347.
2.Why is the percentage of genetic eye problems mentioned in paragraph 3?
A.To show the significance of studying mice’s genes.
B.To prove mice’s genes are similar to humans’.
C.To warn the high risk level of suffering them.
D.To explain how common they are among people.
3.What should scientists do first to unlock secrets of genetic blindness?
A.Compare humans’ genes with mice’s.
B.Recognize each gene’s role of humans.
C.Set apart a gene of a mouse each time.
D.Figure out each gene’s function of a mouse.
4.What can be a suitable title for the text?
A.New Ways to Cure Sight Loss
B.Genes Found Behind Eye Problems
C.Genetic Diseases Discovered in Mice
D.Humans Genes Causing Eye Diseases
Reading books and looking at pictures is great, but nothing facilitates learning like travel, especially for teenagers. Not only do they get to see a world beyond their neighborhood, they also get to experience it — feel it, taste it, hear it, and better understand the world around them.
After nearly four decades in the classroom and traveling the world, Phyllis Duvall Bailey knew this perhaps better than anyone else. Becoming involved with the work in AKA Kappa Alpha Sorority Inc. In US, she worked to educate children about the United Nations. There was no doubt in Bailey’s mind that the lesson would mean so much if the students could see things for themselves.
Starting in 2015, Bailey, 82, set out to take her students to the UN Headquarters in New York City to give them a “Window Seat to the World”, and thus transform them into global citizens. Indeed, it is a great opportunity to give students national and international exposure. Since Bailey saw the students as future leaders, she was desperate to expose them to the UN, its mission, its agendas and its supporting organizations. She decided to give $ 10,000 (70,720 yuan) of her own money to pay for the late June trip, enough to take 10 students ages 14-17 on a four-night stay in New York. There, they had guided tours of the UN Headquarters and the New York City harbor.
It was Quenyaun Payne’s first trip to the city and Taylor Sappington’s second. Payne, 17, is a senior at McEachern High School in the state of Georgia, US. Sappington, 15, is a junior at Therrell High School in Atlanta, Georgia, US. Both said their visit to the UN was inspiring.
“I liked how countries are not only working together, but also they’re focused on common goals like global warming and keeping the peace.” Sappington said.
Payne commented, “The trip was amazing. I’m so thankful Mrs. Bailey made it possible.”
Actually, there are a lot of people grateful for the retired teacher’s effort. The United Nations Association of Atlanta recently gave Bailey its Humanitarian Award, and the United Nations Association of the US awarded her with the National Education Award. But Bailey didn’t looking for recognition or even gratitude. Over those four days in New York, we’d already felt it, seen it in the eyes of those IQ teenagers. Payne and Sappinton felt grateful to him, who made the trip.
Bailey said, “It was a real joy to get to see and watch their reaction to new experiences.”
1.What does the underlined word “this” in Paragraph 2 refer to?
A.The benefit of traveling.
B.The good reading habit.
C.The new teaching method.
D.The thing teenagers like.
2.How did Bailey help students?
A.She paid for trips that helped students see the world.
B.She offered students volunteer opportunities at the UN.
C.She taught students life-long learning skills.
D.She paid for them to go to school.
3.What can we know from Sappington’s words?
A.He wants to visit New York City again.
B.He found the trip to the UN beneficial.
C.He would like to contribute to global affairs.
D.He is determined to work for the UN in the future.
4.What would Bailey probably agree with?
A.Winning an award motivates her to work hard.
B.Classroom teaching is better for students’ development.
C.Students today are not willing to sock new experiences.
D.Students’ gains are more important than the recognition of her efforts.
In no particular order, here are some songs on the Music app of my phone:
On a Sunday Afternoon by Lighter Shade of Brown—A student of mine introduced this rap song lo me all the way back in the early 1990s, when 1 was teaching Spanish at a local university. The story in the song takes place not too far from where I live in Los Angeles. It’s a good “driving” song, nothing complicated or “deep”.
Say Something by A Great Big World—A more recent song about a couple losing contact with each other. The piano part is very little playing but beautiful.
American Pie by Don McLean—Another song from my youth in the 80s, very popular with almost every American of my generation. It retells some of the key events of the middle 20th century, a song of happy memories of the past and wanting to return to those better times.
The Weight by The Band—Another old song, originally made public in 1968, but one I didn’t hear until I was in high school more than 10 years later. I don’t understand the words to the song completely, but the feeling of the song is very comforting to me.
Under the Bridge by Red Hot Chili Peppers—This Los Angeles group wrote a song that 1 used to listen to when I first moved to LA more than 25 years ago. I didn’t know anyone here when I first arrived. When I got bored, I used to drive up and down the major streets that cross the city from east to west, listening to this song about the “city of angel” being as “lonely as I am. (Don t worry! I have plenty of friends now.)
1.What does the underlined word “deep” probably mean?
A.with skill B.with comfort
C.with a normal meaning D.with a significant meaning
2.When did the author probably hear the Weight by The Band?
A.In 1968. B.In 1970.
C.in the 1980s. D.in the 1990s.
3.When the author first moved to LA, the first song he heard was .
A.Say Something B.American Pie
C.The Weight D.Under the Bridge
Directions: Write an English composition in 120-150 words according to the instructions given below in Chinese.
经过一段时间的网上学习之后，明启中学在高三学生中进行了一个题为”你最喜欢的在线上课模式”的调查，调查结果如图所示。
A. 直播课并且有师生互动 B. 录播课并且之后有师生互动时间
C. 直播课但无师生互动 D. 录播课且之后也无师生互动时间
你可能会用到的词汇:
直播课:live streaming lesson 录播课: prerecorded lesson
请你根据该图标写篇作文，你的文中需包含以下信息:
1. 简要描述该图标；
2. 谈谈你的看法
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Directions: Translate the following sentences into English, using the words given in the brackets.
1.该论文声称，独处能够让我们更好地进行自我反思。(It ...)
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2.地方政府应当采取什么样的措施来维持物价的稳定呢？(measure)
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3.即将拍摄一部影片，致敬这些无私奉献的义务工作者。(honor)
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4.互联网教育资源丰富，爱学习的人可以获得各种免费课程，足不出户、学遍天下。(So ...)
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Directions: Read the following passage. Summarize the main idea and the main point(s) of the passage in no more than 60 words. Use your own words as far as possible.
Britain’s Buses are Getting Emptier
In Britain, buses account for more public - transport trips than trains, tubes and trams put together. People love them, in theory: one poll by Transport Focus, a consumer group, found that 74% of young people think they are a good way of getting around and 85% believe it is important for a place to have a good bus service. There is just one problem. In practice, Britions are taking buses less and less.
Why are London buses emptier? One thing that has changed is young people’s behavior. The young are heavy bus users when they travel. But, increasingly, they do not travel. According to Transport for London, the average 17 - to 24-year-old took 2.3 transport trips per day in the year 2011- 12 but only 1.7 in 2018 - 19. The National Travel Survey confirms that no group has cut back harder on travel since the early 2000s than teenagers. Young people are more diligent these days, and stay in school for longer. They can do the things that young people love to do on their phones, without going out.
The other big bus users are the poor and the old, especially outside London, but both are turning away from buses to cars. Lower lending standards have made cars easier to acquire; a fuel-tax freeze and fuel - saving engines make them cheaper to run. Cars are ever more comfortable and easier to operate, with parking-assist technology and lane-drifting alerts to help starters. Outside London, the average free bus pass was used 90 times in the year 2010-11 but only 74 times in 2018-19, according to the Department for Transport.
Finally there is the gig economy(零工经济). Online shopping and Uber probably substitute of bus trips as well as private car journeys. And they put new vehicles on the roads, which slows everything down. The number of light-goods vehicles in London has risen by 28% since 2012. Tony Travers of the London School of Economics points out that bus speeds have fallen slightly in the capital, even though private cars have almost been cleared up from the city center. The average London bus now travels at 9.3 miles per hour. Just as people become less inclined to run after buses, they are becoming easier to catch.
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